a cold day in washington d.c., but showing up for a reaction on climate change. environmentalists gathering at the nation's mall. the national mall. they want president obama to reject a proposed keystone pipeline that will carry oil from canada to the gulf of mexico. and supporters say the government intervention is ill-advised. a popular washington state gun maker responding to-- after they passed a sweeping assault weapons ban and new restrictions on ammunition. a political battle also at the same time is set in another state, colorado. lawmakers there are preparing to vote on gun control measures as early as tomorrow. adam housley is live for us in los angeles with more. adam. >> yeah, harris, the political gun battle from small towns like california, all the way to the national state and of course at the state level, you mentioned new york and colorado over the weekend, it was all about gun laws, like a marathon session on saturday. saw four of them passed, including gun laws that do everything from banning the purchase of magazines that hold 15 rounds to ot